HelenOS sources

root/kernel/arch/mips32/src/mm/km.c

DEFINITIONS

1. km_identity_arch_init
2. km_non_identity_arch_init
3. km_is_non_identity_arch

/*
 * Copyright (c) 2011 Jakub Jermar
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/** @addtogroup kernel_mips32_mm
 * @{
 */

#include <arch/mm/km.h>
#include <mm/km.h>
#include <config.h>
#include <typedefs.h>
#include <macros.h>

void km_identity_arch_init(void)
{
        config.identity_base = KM_MIPS32_KSEG0_START;
        config.identity_size = KM_MIPS32_KSEG0_SIZE;
}

void km_non_identity_arch_init(void)
{
        km_non_identity_span_add(KM_MIPS32_KSSEG_START, KM_MIPS32_KSSEG_SIZE);
        km_non_identity_span_add(KM_MIPS32_KSEG3_START, KM_MIPS32_KSEG3_SIZE);
}

bool km_is_non_identity_arch(uintptr_t addr)
{
        return iswithin(KM_MIPS32_KSSEG_START, KM_MIPS32_KSSEG_SIZE, addr, 1) ||
            iswithin(KM_MIPS32_KSEG3_START, KM_MIPS32_KSEG3_SIZE, addr, 1);
}

/** @}
 */